Elevator signal system.



A. LE BLANC.

ELEVATOR SIGNAL SYSTEM.

APPLICATION FILEDAPR. 16. 1913.

. Patented Jan.22,1918.

4 SHEETS SHEET 1.

A. LE BLANC.

ELEVATOR SIGNAL SYSTEM.

I APPLICATION FILED APR. 16| I913. 1,254,331.

m H w m m 4 f w m Ev "Ii/E8858 dgwxfi/ L ATTORNEY A. LE BLANC.

ELEVATOR SIGNAL SYSTEM.

APPLICATION FILED APR. 16, 1913.

4 SHEETSSHEET 3 mvss s ATTORNY A. LE BLANCf ELEVATOR SIGNAL SYSTEM.

APPLICATION FILED APR. 16, 1913.

1,254,331. Patented Jan. 22,1918.

4 SHEETS-SHEET 4- INVENTOR UNITED STATES PATENT. onnion.

ALEXIS LE BLANC, OF NEW YORK, N. Y., ASSIGNOR TO GURNEY ELECTRICELEVATOR COMPANY, OF HONESDALE, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

ELEVATOR SIGNAL SYSTEM.

Application filed April 16, 1913.

To all whom it may concern:

Be it known that I, ALEXIS LE BLANG, a citizen of the United States, anda resident of the city, county, and State of New York, have inventedcertain new and useful 1mprovements in Elevator Signal Systems, of whichtl e following is a specification, reference being had to theaccompanying drawings. forming a part thereof.

My invention relates to elevator signal systems and its object is toprovide a simple and eliicient call and indicating system which is easyto install and reliable in action. It also includes improvements invarious d tails of construction. and in certain devices which form partsof the system.

1 will describe my invention in the follow" ing specification in whichthe various cooperating parts of the system will be specificallydescribed and the novel features of such parts and of the system as awhole will be pointed out in appended claims.

In the drawings,

Figure l is a diagram showing an elevator car and station indicatorstogether with as many of the electrical circuits and other devices asare necessary to describe a practicable embodiment of my invention.

Fig. :2 is another diagram of a car and a pressure responsivearrangement for actu ating certain parts of the station indicators.

A detail of construction is illustrated in Fig. 3 this being a switchand arrangements for actuating it, controlled either by the position ofthe car or by the position of the switch.

A push-button and indicator case is shown in front elevation in Fig. 4:and Fig. 5 is a sectional plan view taken through the center thereof toshow a feature of construction of the push-button.

One of the station indicator actuators is shown in sectional sideelevation in Fig. 6.

Figs. 7 and 8 are sectional elevations of portions of this device atright angles to the section in Fig. 6, taken on the lines 7-7 and 88respectively.

A door actuated switch used in this system is illustrated in sectionalelevation in Fig. 9 with the position of the door below it shown.

F ig. 10 is a top plan view of this door switch.

Specification of Letters Patent.

Patented Jan. 22, 1918.

Serial No. 761,435.

A sectional plan view of the door switch is shown in Fig. 11, thesection being taken on the line l1-11 of Fig. 9, and Fig. 1:2 is asectional elevation of a portion of this device taken on the line. 1i2l2of Fig. 11.

Referring first to Fig. l, I will describe the system itself and itsoperation, after which I will specifically describe the variousmechanisms and devices shown in the other figures of the drawings, usingthroughout like characters of reference to designate similar parts.

10 designates a source of electrical supply, preferably of low voltage,such for example as a storage or primary battery. From one of itsterminals runs a conductor 11 which goes to the car 12 through aflexible portion H In the car it passes through an operators switch 13by means of which the operator in the car controls the supply of currentto all the devices associated with his car and its hatchway andstations. From this switch runs a flexible conductor M to a feed wire14.

At each floor or station is a single pushbutton for which lampsenergized by the bat cry 10 are provided. At each of the intermediatestations are two of these lamps 20 and 21 the first of which ispreferably colored red. At the bottom station only the red lamp 20 isnecessary while at the top station (not shown) only the uncolored lamp21 is required. One terminal of all these push-button lamps is connectedwith feed. wire l-ilby a branch wire such as 15. The other terminal ofall the red lamps 20 is connected through a conductor 16 with astationary contact 31 of a direction switch 30, and the other terminalof all the uncolored lamps is connected through a conductor 17 with astationary contact 32 of the same switch. The direction switch has an1ov-= able contact arm 83 which is .Etl'l'fll'lfiktl to rest uponcontact 31 when the car approaches or is at the upper end of its path oftravel or is moving downward, or to rest upon the contact 82 when thecar is at the lower end of its path of travel .or is moving upward. Thiscontact arm is connected by a conductor 18 with the other terminal ofbattery 10.

Consequently whenever the operators switch 13 is closed the redpush-button lamps at all the floors are lighted when the car is its runor is moving downward of the uncolored push button lamps are lightedwhich will be the case if the car is at the bottom of its run or ismoving upward.

The push buttons themselves are desig nated by 40 and each is connectedwith the side of the battery through the branch conductors 15 with thefeed wire 14. Back of each push button is a spring contact 411 withwhich tl e button first engages who actuated and after which it is movedagainst a stationary contact which is connected with an arm l?) which isnormally raised against contact 4.4: by a spring but which may be pulleddown against contact -15 by a magnet 46 when the latter is energized.4:7 and l8 are relay windings arranged to close a contact between an arm4-9 and a stationary contact above the winding 17 or with a similarcontact above the winding 48.

The indicators each comprise a movable member or arm 50 which isactuated by the movement of the car. This is arranged to move over aseries of stationary contacts 51 as the arm moves to its centralposition, which are connected respectively to a series of lamps 52 whichare preferably colored red. The upper two contacts are connected to theupper lamp and the other contacts are connected each to one of thelamps. The other terminals of all of these lamps 52 are connected withconductor 16.

If the arm is below these contacts and is moved upward toward itscentral position it moves over a series of contacts 53 which aresimilarly connected with a series of lamps 54 which are preferablyuncolored. The other terminals of lamps 54 are connected with conductor1?. By providing two ccnta'cts for each of the end lamps as shown, it isenergized twice and indicates the general position of the car a littleearlier.

lVhen near and at its central position the arm 50 also touches astationary contact 55.

In conjunction with each door is a door actuated switch 60 each of whichcomprises a magnet winding 61 which controls the opening of a circuit atG2, and another magnet winding 63 which controls the opening of acircuit at (34-.

At each landing is a pair of interlock re lays each pair of whichcomprises a magnet winding arranged to d aw down an armature T1 againsta contact T'Zto close a circuit and another magnet winding 73 arrangedto draw down its armature 7% against a contact T5.

In the car is a signal lamp the circuit through which is controlled bv arelay which comprises a magnet winding 81 which when energized draws itsarmature 82 against a contact 83. St is the usual illuminating lamp forthe car which is fed from mains 85 "one of which is connected with thecontact inseam 83 and the other of which is connected through the si llamp 80 with armature 82. Consequently when the magnet winding 81 isenergized, the signal lamp circuit will be closed and the signal lampilluminated.

As reference has been made to the various devices shown in Fig. l, Twill now describe the operation of the system illl'lstrated in thisfigure, reser *ing until later a more specific description of theconstruction and operation of the devices used. in the installalion ofsuch a system.

It has been stated that when the elevator car approaches or is at thetop of its run or is moving downward, the arm 33 of the direction switch30 will rest upon contact 31. As feed wire 14; is connected with wire 11from the side of the battery 10, cir cuits will then be closed from thisfeed wire through branch wire 15, through red push button lamps 20,conductor 16, direction switch 30 and conductor 18 to the other side ofthe battery. Consequently all of the red push button lamps 20 will beilluminated. This will show at each floor the fact that the car hasapproached or is at the top oi its run or that it is moving downward.

But if the car has approached or is at the lower end of its run or ismoving upward, the arm 33 of the direction switch will rest upon contact32. Under these conditions no circuits can be established through thepush button lamps 20. but the uncolored lamps 21 will then beilluminated through circuits from branch wires 15, conductor 17 anddirection switch 30. Thus either all of the down push button lamps 20 orelse all of the up push button lamps 21 are always illuminated wheneverthe operators switch 13 i closed, so that person in any hall can see atglance whether a given car is going 111 or down.

Let us assume that the car is above station and is either at the upperend of its path travel or is moving toward that station. person desiringto go down then presses ans 1 button 40 at that floor. This push butonis connected with the -lside of battery 10 through one of the branchwires 15. he inward movement of the push button moves contact l1against: contact 42 and completes a circuit through contact 4--'landrelay winding 47 and through a conductor 90. through wires 16 and-18 tothe other side of the battery. Thus winding 47 is energized and pullsdown arm 4-9 onto the stationary conact above this winding. Thisestablishes a circuit from feed wire 1-1- and branch 15 to the indicatorarm 50 and to and through winding 61 of the door swi ch to wire 16 andthence to the other side of the battery, thus energizing the winding 61.

The inward movement of the push button at the same time closes a circuitfrom itself through a conductor 91 through winding l U ii of theinterlock switch at that floor to wire 18 and thus to battery. Themagnet 70 will then pull down its armature T1 to which conductor 91 isalso connected, against contact 72 which establishes a circuit throughwire 92 and through the closed contacts out all of the door switchcontacts 62 to conductor 93 which is connected with conductor 11 andwith the side of the battery. This results in the interlock n'iagnet 7Omaintaining a circuit, from the battery through relay winding 47 afterthe push button. is released and the energized relay winding 47maintains the circuit through door switch winding 61.

With the circuits in this condition the downward movement of the carwill move indicator arm toward its central position. If the latter isnot already on one of contacts 51, it will continue to more untiltouches the upper of this series of contacts. This will cause the upperof the red lis'hts 52 at this station to be illuminated. It has beenshown that the plus side of the battery is now connected to theindicator arm 50 and the circuit will be completed through the upper ofcontacts 51, upper of lamps 52, wire 16, contact 31, arm 33 and wire 18back to the battery. Further movement et arm 50 in the same directionwill move it ett of the upper of contacts 51 when the upper red lightwill go out. After this arm 50 moves onto the next of contacts 51 whenthe upper red lamp 52 will again I e illum nated. Still further movementof the arm 50 will bring;

it consecutively onto the succeedii cci c'ts 51 so that the other redlamps will be illuminated successively. The pat are so adiusted that thearm 50 will reacn its central osltion when the car is at t e landing;

P for which the indicator is pi;'oletl. The person who pushed the button\Yll. therefore be advised of the approach of the car.

Just before the car reaches ti e landing, the indicator arm 50 willtouch the stationary contact his will close a circuit through wires 9-1,95 tlexilole con luctor 95 throu 'h car relay windin S1 flexible con O Dductor 36 and wire 96 to the battery. The rela windinn' 81 thusenere'izcd its 3 o armature 82 against contact 83 which closes thecircuit from mains 85 through car signal lamp 80. This shows the caroperator that a stop is desired at the landing he is approachin v When aplurality of e raters are in stalled together the push o H, indicatorand door switch devices and circuits there for are duplicated so thatthere is a complete set of all of these parts at each floor for eachcar. Only as many of these parts as are necessary to fully disclose theoperation of the system are shown in the dia rain as the duplication ofthem on the drawing; would only lead to confusion. It

noted however, that there is a push button for each car at each floor,for each of which. are two direction indicating lamps 20, 21, so that aperson standing in a hall can see at a glance which cars are availablefor taking him down and r-Jhich for taking him up. If he pushes thebutton for any down car this will one q ize all of the relays l7 at hisfloor so that the indicator lamps of all down cars in a limited distancefrom his floor will be illuminated as the different cars approach.Consequently the passemrer can see which of the cars is nearest hisfloor. The car signal lamp of the first car to approach the door will bethe first one to be illuminatet.

llow we will assume that he car operator stops his car at the landing Bat which the button had been pressed for a down car. In opening thehatchway door the electrical connection. at (32 influenced by ma gnetwind- 61, as "\Vlli hereinafter be shown, is broken. This breaks thecircuit t trough interlock magnet winding; 70 which in turn allows itsarmature to be lifted from contact 72. This cuts oti the current supplyfrom all the relay magnets 47 on that particular floor. The effect ofthis is to clear the tloor and to leave the system in the con-- ditionit was in before a huttoi'i tor a down car had been actuated.

if any of the cars were at the lower ends ot their paths of travel orwere below station B anl moving upward toward it the "olored push buttonligh s 511': for every an ear Wlil no illunnna tet passenger desiri suchbutswitch 30 connected i any i this case the (lllG' tion t l. A

- v'. "3 a 4 s onaected wire it] and has a circ .i .Olh-Cfl'l magnetwinding; 46 and 9? to wire 1?. This it draw the ture ahcve vindmg 16away from con- 7 i i onto contact ell-C ll be down onto thi inn".

he. rest of the operation will be similar to that previously described,except that magnet winding 73 of the interlocl i l ow the winding" lZGCland armature pulled contact above the latter wind will he energ zedinstead of winding 70, and iagnet winding 63 of the door switch will heenergized instead 0 winding 61. The

cater contact 50 will move upward tow rd its central position causingthe low uncolored lamp -34 to he lighted twice and each or" the otherlamps to be lighted consecutively. At a redeterminel distance of the carfrom floor B, the arm 50 will close the car relay magnet circuit atcontact the operator will get his sienal as helll the door it will inthis case be the contact at 6 1 that is broken and the relay contact ofthe interlock switch that clears the floor.

Thus each push button serves for a down call or for an up -all whenevera car is in condition to respond to such a call. Any or all push buttonson a given floor which are in condition to transmit a down call (whichcondition. is clearly indicated by the illumination of the red pushbutton) will transmit its signal to any of the cars which approach thefloor from above. Any or all of the push buttons which are in conditionto transmit an up call, will transmit its signal to any of the carswhich approach the floor from below. Moreover these down and up callsare noirinterteringas are also the clearing devices for the floors, thatis the door switches 30 and the interlock relays.

There is one push button at each elevator shaft so that in a largeinstallation with a long line of elevators a passenger is not requiredwalk to a central poetion but may press the nearest button which happensto be in condition to transmit the oarticular signal which he desires.

The switch for causing the illumination 01 the indicator lamps 5 5-1. ispreferably adjusted to move from one of its contacts to the next as thecar moves from one floor to the adjacent one so that a 3813011 in a hallcan see how far away the car is. But the device is so arranged that noneof the indicator lamps is ilhn'ninated except when one or more of thecars near the doc and then only it a button has been pressed. This is ofdecided advantage especially in a tall building with many elevatorsbecause the indicator lamps "for all cars more than a predetermineddistance away are dead' so that the passenger will see only theindicator lights for the nearest cars. it has been pointed out that noneof the ir. icator lamps is illuminated unless button has been pressed.It is also true that only the down indicator lamps become illum natedafter a button for a down signal has been pressed and only the upindicator lamps become illuminated after button for an up signal hasbeen presesd.

in order to show more in detail some of the mechanisms which it havedevised for carrying out this system. 1 will describe the devices shownin the other figures of the drawings.

in Fig. 2. a pressure changing" device is shown which is placed abouthalt way up the shaft. Between this and the car 12 is a flexible member101 which may be the cable comprised of the flexible conductors 11 1-5,and 96: This is so arranged that as the position of the car changes, agreater or less amount of the weight of the member 101 will act upon thefluid below a diaphragm 102 in the pressure changing device. This fluidis in communication with a tube 103 in the hatchway which tube is closedat its ends and is connected by branches 10-1 with pressure responsivedevices .105 one of which is provided for each lloor or landing.

One of these is shown more in detail in G. This comprises a casingwithin \illICll 1s a flexible diaphragm 106 with which is connected avertically movable rod 107 which starts to move upward when the pressurebelow the diaphragm 10G reaches a predetermined value sullicient toraise a weight 108 and continues to rise in proportion to the change ofposition of the car. against the action 01 an adjustable spring; 109.its upwarn movement is limited so that after it has moved up as far asit can, a continued rise in the pressure will have no eiliect upon therod.

lVhen the pressure decreases, it will at a predetermined point allow therod 10? to move downward until it reaches the lower limit of itsmovement after which further decrease in the pressure will have noeliect upon the rod 107.

The weights 108 are diii erent atthe different tloors and are so prportioned as to cause the dilierent rods to be in the center of theirpath of movement when the car is at the floor for which the pressurercsponsive device is provided. This part of the apparatus is made thesubject matter of another application for Letters Patent filed il 113th1913, serially numbered 761.44-36. the aforesaid api'ilication is a moreelaboiate decri :LlOn of this mechanism.

These pressure responsive devices 10;) are the actuators for the floorindicators. A. part of rod 10? forms a rack 110 with which meshes ninion111 on a shaft which is rotatably ported in blocks 1123 and 113 (itinsulati. material. To the shat't are allixed two arms 11 i and 115 ineach of which is an oiienina carrying a ball 11-: and 115 Springs 11-1and 1143 move with the arms and are arranged to press the balls outward.

in the insulating block 112 is a continuous metallic ri g 118 a dconcentric therewith are metallic pieces 11?. A groove is formed betweenthe ring; 116 and the pieces 11? in the block 112 and the bull 11 lrunsin this groove. These parts form the movable arm 50 and the series oflamp contacts 51 and 53 of 1.

in block 118 is a ring 118 similar to ring 116 and connected with thesame conductor, and a segment 119. An annular groove is prov ded t r therun of ball 11?)". The segment 119 forms the contact of Fig. 1.

It may be seen that the apparatus illustrated in Figs. 6, 7 and 8performs the functions hereinbefore described for illuminating theindicator lamps 52, 5-1 and as the car approaches a landing and forclosing the circuit for car relay magnet 81 when the car is near or atthe landing.

Referring now to Fig. 3 the :means for actuating the direction switcheswill be described. The hoisting rope or the counterweight rope passesover a sheave 31 on the shaft of which is frictionally mounted anactuator comprising two arms and 36. The switch arm 33 is pivoted toswing about the axis of the shaft onto the stationary contacts 31-32. Aspring 37 is under tension between the switch arm 83 and a fixed pointdirectly above its pivot.

The operation of this part of the device is that if switch arm 33 isupon contact 31 and the car ascends. it will cause the sheave 34: torotate in a direction indicated by the arrow. The actuator will movewith it and its arm 85 will engage the switch arm to push it to theleft. As soon as the switch arm passes its center, the spring 8? drawsit over onto contact Further movement of the actuator brings its arm 85against switch arm again, after which it will slip on the shaft ofsheave 34; at its point of frictional connection therewith.

Obviously a downward movement of the car will cause actuator arm 36 tomove switch arm 33 onto contact 81. The space between the arms isprovided to allow a limited reverse movement of the car to take placewithout atl'ecting the direction switch. This permits the car operatorto return to a floor he has passed without showing change of directionat the push-button lights.

Such an arrangement shifts the direction switch when the car moves, butas it is desirable to have this switch in its down position when the caris at the upper end of its run even if at rest, I have provided othermeans for accomplishing this. In Fig. 3, 120 is a pressure responsiveactuator connected with the tube 103 by branch 121. This is adjusted toraise its rod 1.22 when the car at the upper end of its run causes thepressure in tube 103 to reach a predetermined value. The rod 122 isconnected with the lower arm of a bell crank lever 123, the upper arm ofwhich is moved to the right against the opposition of a spring 1241, andto force the switch arm 33 over past its center so that spring 37 willcarry it over to the down contact 31.

125 is another pressure responsive actuator connected with tube 103 bybranch 126. This one has a rod 127 connected with the lower arm of abell crank lev r 128, to the upper end of which is connected a spring129 which pulls it over to the left when the pressure in tube 103reaches the point it has when the car is at the lower end of its run.This will cause switch arm 83 to be moved onto up contact 32.

A desirable form of push button and indi cator is illustrated in Fig.at. The push button itself, 40, is in the center of this casing which isadapted to contain all of the station mechanism shown in Fig. 1 exceptthe door switch 00 and the interlock relays 70.

In this case the down push button lamp 20 is directly above the pushbutton back of a panel 17 on the back of which is arranged to show theword Down when this lamp is illuminated. The up push button lamp 21 isback of a similar panel 4-8 below the push button which is arranged toshow the word Up when this lamp is illuminated.

The five down indicator lamps 52 are back of the five circular openingsabove panel 4:7, and the up indicator lamps are back of the circularopenings below panel 18. The circular openings are covered with curvedglass disks which project beyond the outer surface of the casing and arepreferably formed with facets so that the lights may be seen from thesides of the device as well as from in front of it.

I prefer also to make the push button itself with a similar glasssurface as is shown at 19 in Fig. 5 and to place within it push buttonlamps 20 and 21 in circuit with the lamps 20 and 21 respectively.

One of the push button lamps will thus be always lighted and if they aremade to correspond in color to the lamps 20 and 21 the push buttonitself will be illuminated with either a red or white light and willindicate apart from the lamps 20 and 21. the direction of car travel.Obviously, the lamps 20 and 21 and the panels 17 and %8 may be omittedif desired.

It may be seen that a person desiring to signal a car to stop at hislanding can see at a glance which of the cars is in condition to receivea down call and which are in condition to receive an up call. If hepushes one of the buttons for a down call. this will cause the downindicator lamps 52 for all cars which are in condition to receive such acall, and which are within six floors of the landing for which thebutton has been pressed, to be illuminated. If a car is five or sixfloors above the landing or comes within such distance after the buttonhas been pressed, there will be a red light show at the upper circularopening. This light will go out and be lighted again when such a car isat the fifth floor above the landing. Then when the car reaches thefourth floor above the landing a light will appear at the next to theupper opening. These lights will respectively approach the push buttonuntil the car reaches the landing.

As the indicator lamps for several cars may showat the same time, theperson who pushed the button may readily see which of such cars isnearest him. of course a similar el'lect will be produced it a signaltor an up car has been sent in.

I have arbitrarily called the down push button lamps and the downindicator lamps red. and the others uncolored as this is a preferredarrangement. but no limitation is intended by such description.

Referring now to Figs. 9, 10, 11 and 12, I will describe theconstruction of the door switch therein illustrated and will point outits operation more specifically.

This device is supported upon a metallic plate so which may be set intothe door cas-. ing above the sliding door 66. A hole is provided inplate 6.3 in which is a ball 67 which projects below the plate into thepath of movement of a projection 68 which is preferably a leaf-spring asshown.

130 is a plate of insulating material and 131 the base of an iron magnetframe. Two pairs of uprights 13:2 rise from this base and are connectedby cross members 133 to complete the, magnet frame. The plate 130 andmagnet frame base 131 are spaced from the plate (35 and from each otherby corner lugs and these parts secured to ether by screws 13 1-.

Extending centrally through the parts 130 and 131 is a verticallymovable rod 135, the lower end of which is enlarged, of invertedcupshape, and is positioned directly above the ball 6?. To the upper endof this red is atlixed a non-magnetic flat bar 136 near the ends ofwhich are secured magnet core sections 137 and 138, which projectthrough the cross members 138 of the ma gnct frame into the magnetwindings (31 625 respectively. The structure just described is a rigidone so that when the rod 135 is raised the magnet core sections areraised with it.

Under the core section 13? is a lower magnet core section 110 which isalso vertically movable within magnet winding 61. The lower end of thissection is enlarged as at 111 to limit its upward movement by engagementwith the base 131 of the ma net frame and below this is secured a washer112 of insulating material of still larger diameter.

Under core section 138 is a similar lower core section with a lowerenlarged end 1491 to which is secured an insulating washer 145.

14-6 is a spring contact mounted upon the insulating plate 130 and aboveit and in sulated therefrom is another spring contact 1-17, the end ofwhich projects over the an nular shoulder formed by the washer 1-l2.These spring contacts are arranged to close a circuit at the point 62.

Another pair of spring contacts H8 and 149 are similarly mounted onplate 130 with the end of contact 149 overlapping the washed These arearranged to close acircuit at the point (it.

When the door is opened by being moved to the right, the spring 68 willraise the ball 61' and this will ti rce the rod and its 1W0 connectedupper magnet core sections 13? 138 upward. If nether of the magnetwindings 61G3 are ener ized, this movement or the door will have nofurther cliect. But it a button has been pressed at the floor at whichthis door switch is mounted for a down signal, this, as has been pointedout, will cause magnet winding 61 to be encrgized. This then will causethe upward movement of upper magnet core section to raise with it lowermagnet core section 1 10 but will have no effect upon lower core section143. When lower magnet core section 110 raises, its connected washer1-l2 will raise spring ctntact 117 "from spring contact 116 and willbreak the circuit which had been closed at 62. This will cut oil thecurr at supply from magnet winding of the interlock relay and will clearthe floor of all existing down signals. lhus the opening of any door 01a given landing will clear any and all down signals which have been sentin by pressing one or all of the buttons at such landing which have beenpressed tor down signals.

Similarly, after an up signal has been sent in the winding (33 will beenerg'zed that the act of opening the deer will cause lower magnet coresection 118 to be raised and its washer 1-15 will raise spring contact11-9 from sprirg contact 118 to break at (it the current supply tointerl clz relay winding T3. This will clear the floor of all up signals.

Although the varicus devices which 1 have described are capable ofperforming the funct ons required of them for an operative installation01 my system it is (bvious that many of the details of construction maybe varied widely and that other devices than those specificallydescribed may be utilized w thin the scope of this invention and withinthe limitations of the appended claims.

One of the advantages of this svsem is the ease of installation as manyof the devices are self-contained and may be as sembled and evenadjusted in the shops. The wirirg needed in the building is alsoextremely s mple so that the cost of installa tion is'small comparedwith such systems as have herctotore been used.

What I cla m is:

1. In combination with an elevator car. a station signal transmitter,circuits therefor, means acuated by the moven'ient oi" the carfor-changing said circuits whereby the same mo ement of the signaltransmitter may be utilized for sending a down signal when the l t t l(El connect the down signal transmission line with the supply of energyand for causing the upward movement of the car to actuate the directionswitch to connect the down signal transm ssion line with the supply ofenergy, a lost motion connection in said actuating means to permit areversal of movement of the car through a material space withoutallecting the direction switch, and. a station signal transmitterarranged to complete a circuit through whichever of said transm ssionlines is connected ith the supply of energy.

In combination with an elcntor car, a down signal transmission line. anup signal transmission line, a direction switch arranged to connect oneor the other of said transmission lines with a supply of energy, meansfor causing the downward mo ement of the car to actuate the directionswitch to connect the down signal trans iission line with the supply ofenergy and for causing the upward movement of the to actuate thedirection switch to connect the up signal transmission line with thesupply of energv, cther means for actuating the direction switch whenthe car reaches the ends of its path of travel, and a station signaltransmitter arranged to complete a circuit through whichever of thetransmission lines is connected with the supply of energy 4. Incombination with an elevator car. a down signal transmission line, an nosignal transmission line, a direction sv sch arranged to connect one orthe other of said. transmission li es with supply of energ, means forcausing the downward movement of the car to actuate the direction switchto connect the down signal transmi sion line with a supply of energyandfc-r causing the upward movement of the car to actuate the directionswi ch to connect the up signal transmission line with the supply ofenergv, a lost inction connection in said actuati b means to permit areversal of movement of the car through a limited space withoutaffecting the direction switch. other means for actuating the directionswitch when the car reaches the ends of its path of traveh and a stationsignal transmitter arrarged to complete a circuit through whiche er ofsaid transmission lines is connected with the supply of energy.

est :7

5. In combination with an elevator car, a down signal transmission line,an up signal t'ansmission line, a supply of energy, a di recticn switcharranged to connect the sup ply of energy with one or the other of saidtransmission lines, a rotatable shaft connected with the car, anactuator frictionally connected with said shaft and arran ed to belllOYCCl a limited distance from side to side by rotation of the shaft.in opposite directions to move the direction switch to con nect one orthe other of said transmission lines n t the supply of energy, saidactuator comprising a pair of spaced arms adapted to engage the switchand arranged to pro vide a limited reverse movement of the actuatorwithout aliiecting the direction switch, and a station signaltransmitter arranged to complete a circuit through whichever of saidtransmission lines is connected with the supply of energy.

6. in combination with an elevator car, a down signal wire. an up signalwire, a direction switch comprising two stationary contact with whichsaid w'rcs respectively are connected, and a pivotally supported contactarm arranged to swing from one to the other of said contacts, a sourceof electrical supply connected. with the switch a m, a. rotatable shaftconnected with the car, an actuator frictionally connected with saidshaft and arranged to be moved from side to side a limited distance bythe rotation of said in opposite directions, said actuator comprisingtwo spaced arms, one on each side of said switch arm, each a1 tlllLQCl.to force t c switch arm from one of shid contacts to cause it to move onto the other contact, the engagen'ient of the switch arm with thecontact being arranged. to limit the movement of the actuator and thespacing betiveen 'tihe actuator arms being provided to permit a reversalof movement; of the act uator through a limited space without at iiectmgthe Silc'Cll arm, and a push button arranged to complete a circuitthrough whichever of said signal wir s is connected with the source ofelectrical supply.

Y. In combination with an elerator carfa down signal wire, an up signalwi e. a di rection switch comprising two stationary contacts with whichsaid wires respectively are cornice-ted, and a pivotally supportedcontact arm arranged. to swing from one to the other of said contacts, atension spring coiniccted with said arm and with a fixed point. aboveits pivotal. support. a source of electrical supply connected with theswitch arm, a rotatable shaft connected with the car, an actuatorfrictionally connected with said. shaft and ar'anged to be moved from toside limited distance by the rotaticn of said shaft in oppositedirections, said actuatorcomprising two spaced arms one on each side ofsaid switch arm, each arranged to force the switch arm past it centerfrom one of said contacts to cause it to be moved onto the other contactby the spring, the engagement of the itch arm with the contacts beingarranged to limit the movement oi? the actuator and the spacing betweenthe actuator arms being provided to permit a reversal of movement of theactuator through a limited 5 iace without affecting the switch. arm, anda push buttou arranged to com: plete a circuit through whichever ot'signal wires i connected with the source or electrical supply,

8. in combination with an elevator car, a plurality of s blOll signaltransmitters, circuits therefor, means actuated by the movement of thecar for changing said circuits whertoy tl e s ne increment of any of thesignal transn tors may be utilized tor sending a down signal when the cis at the upper end of its run or is me; cg down ward toward saidtransmitter, or an up signal. when the car is at the lower end oi? itstravel. or is moving upward toward said transmitter.

9. An elevator signal system comprising a single station signaltransmitter arranged to send either down or up signals when actuated,and means at said transmitter to in dicate which of said signals it willsend.

10. An elevator signal system comprising a single tation signaltransmitter a u god to send either down. or up signals wl en actuated, apair of lamps at said transmitter, and means for illiuniuating one ofsaid lamps when too transmitter is in condition to send a down signaland for illuminating the other lamp when the transmitter is in conditionto send an up signal.

11. An elevator signal system con'i 'irisiug a station push button meansarranged to send down and up signals when actuated, a pair of lampswithin said push button means, and means for illuminating one of saidlamps when the push ht ton means is in condition to send a down si nal.and. for ilhtm'iiuating the other lamp when too push button means is incondition to send an up signal.

12. [in elevator signal system comprising a station push button means haring a transparent taco, said push button means being arranged to senddown and up signals when actuated, pair of lamps of different apearancewithin said push button means,

and means for illuminating one of said lamps when the push button meansis in condition to send a down signal and for illuminating the otherlamp when the push button means in condition to send an up signal.

13. in combination with an elevator car, a down signal circuit, anindicating lamp therefor, an up signal circuit, an indicating lamptherefor, a direction switch arranged to be actuated by the movement ofthe car arranged to connect one or the other of said. signal circuitswith a source of electrical supply, and means for causing the downwardmovement or" the car to actuate the direction switch to connect the downsignal circuit with the source of electrical supply and to close acircuit through its indicating lamp and for causing the upward move mentof the car to connect the up signal circuit with the source ofelectrical supply and to close a circuit through its indicating amp, alost motion connection in said actuating means to permit a reversal ofmovement of the car through a limited space without affecting thedirection switch, and other means for actuating the cirection switchwhen the car caches the ends of its path of travel; and a station signaltransmitter ar ranged to complete a circuit through whichrer of saidsignal circuits is connected. with the source of electrical supply.

l t. in elevator system comprising a plurality of station signaltransmitters each arranged to send either down or up signals whenactuated, and means at each transmitter to indicate which of saidsignals it will send.

15. An elevator signal system comprising plurality of station signaltransmitters arranged to send down and up signals when actuated, a pairof lamps of unlike appearance at each transmitter, and means forilluminating the lamps of one appearance at each transmitter when thetransmitters are in condition to send down signals and for illuminatingthe other lamps at the transmitters when said transmitters are incondition to send up signals.

16. In combination with an elevator car,

a signal therein, a station signal transmitter, circuits between saidtransmitter and the car signal, means actuated by the move ments of the.car for changing said circuits whereby the same movement of the signaltransmitter may be utilized for energizing the car signal for a downcall when the car is at the upper end of its run or is moving downwardtoward said transmitter, or for up signal when the car is at the lowerend of its travel or is moving upward toward the transmitter.

17. In combination with an elevator car, a signal therein, a circuit forsaid car signal, a down signal transmission line, an up sig naltransmission line, a direction switch arranged to connect one or theother of said transmission lines with a supply of energy, means forcausing the downward movement of the car to actuate the direction switchto connect the down signal transmission line with the supply of energy,and for causing an. upward movement of the car to actuate the directionswitch to connect the up signal transmission line with the supply ofenergy and other means for actuating the direction switch when the carreaches the ends of its path of travel, and a station signal transmitterarranged to complete a circuit through whichever of said transmissionlines is connected with the supply of energy, and con trol said carsignal circuit,

18. In combination with an elevator car, a signal therein, a circuit forsaid car signal, a plurality of station signal transmitters, circuitstherefor, means actuated by the movement of the car for changing saidcircuits whereby the same movement of any of the signal transmitters maybe utilized to control said car signal circuit for a down signal whenthe car is at the upper end of its run or is moving downward toward saidtransmitter, or an up signal when the car is at the lower end of itstravel or is moving upward toward said transmitter.

19. In combination with an elevator car, a signal system comprising asignal in the car, a circuit for said signal, a station signaltransmitter arranged to control said car signal circuit to send down andup signals when actuated, and means at each transmitter to indicatewhich of said signals it will send.

20. In combination with an elevator car, a signal system comprising asignal lamp in the car, a station push button arranged when actuated tocontrol said signal circuit to cause the car signal lamp to beilluminated for down and up signals when actuated, a pair of lampswithin said push button, and means for illuminating one of said pushbutton lamps when the push button is in condition to send a down signaland for illuminating the other push button lamp when the transmitter isin condition to send an up signal.

21. In an elevator signal system, a down signal circuit, an up signalcircuit, an elec trio station signal transmitter, including a signalpush button and a selector relay for changing said signal circuits sothat a signal may be sent through either of said circuits by the samepush button.

22. In combination with an elevator car, a down signal transmissionline, an up signal transmission line, a station signal transmitter,including a push button and a selector, said push button being arrangedto send a signal through one of said lines for one direction of carmovement, and to first actuate the selector and to then send a signalthrough the other line for the other clirection of car movement.

23. In combination with an elevator car, a down signal circuit, an up sgnal circuit. an electric station signal transmitter, including a pushbutton and a selector relay associated therewith and a relay circuit,said push button being arranged to send a signal through one of saidsignal circuits for one direction of car movement and to first close theselector relay circuit and to then send a signal through the othersignal circuit for the other QllI'QCtlOll of car movement.

24:. In combination with an elevator car, a down signal transmissionline, an up signal transmission line, a direction switch arranged to beactuated by the movement of the car and arranged to connect one or theother of said transmission lines with a supply of energy, a stationsignal transmitter arranged to complete a circuit through whichever ofsaid transmission lines is connected with the supply of energy, and aselector relay associated with said transmitter controlled by saiddirection. switch and arranged to cause the same movement of thetransmitter to close the desired circuit.

25. In combination with an elevator car, a down signal circuit, an upsignal circuit, an electric station signal transmitter, a selectorrelay'associated therewith, a relay circuit, said transmitter beingarranged to send a signal through one of said signal circuits for onedirection oi"? car movement and to first close the selector relaycircuit and to then send a signal through the other signal circuit forthe other direction of car movement, and a direction switch arranged tobe actuated by the movel'nent of the car and to control said s gnal andrelay cificuits.

26. In combination with an elevator car, a signal lamp therein, acircuit for said signal lamp, a car signal relay arranged to controlsaid circuit, a relay winding there-tor, a signal system comprisi asource of electrical supply, a station signal transmitter, a downsignal. circuit and an up signal circuit between said transmitter andsaid car signal relay whereby the energization of the relay winding fromsaid source of electrical supply may be coi'itrolled, another supply ofelectrical energy in the car, and means controlled bv the energizaticnof said relay winding for connecting said other supply of electricalenergy with the signal lamp circuit.

In coi'nbination with an elevator car, a signal therein, a. stationsignal transmitter,

circuits between said 't'l'illlSl'llltltQl and the car signal, meansactuated bv the movements of the car for changing said circuits wh bythe same movement of the s gnal transmitter may be ut lized forenergizing a circuit for a down call when the car is at the upper end ofits run or is moving downward toward said transmitter or another circuitfor an up signal when the car is at the lower end of its travel or ismoving upward toward the transmitter, and means actuated by the movementof the car in the direction for which a car signal circuit has beenenergized, to complete said circuit.

28. In combination with an elevator car, a signal therein, a circuit forsaid car signal, a

plurality of station signal transmitters, circuits therefor, meansactuated by the movement of the car for changing said circuits wherebythe same movement of any of the signal transmitters may be utilized tocontrol said car signal circuit for a down signal when the car is at theupper end of its run or is moving downward toward said transmltter, oran up signal when the car is at the lower end of its travel or is movingupward toward said transmitter, and means actuated by a downwardmovement of the car as it approaches a station from which a down signalhas been sent and by an upward movement of the car as it approaches astation from which an up signal has been sent, to

complete the car signal circuit.

29. In combination with. an elevator car, a signal system comprising asignal lamp in tit} car, a circuit therefor, a station push button meansarranged when actuated to control said signal circuit for down and upsignals when actuated, a pair of lamps within said push button means,and means for illuminating one of said push button lamps when the pushbutton means is in condition to send a down signal and for illuminatingthe other push button lamp when the transmitter is in condition to sendan up signal, and means actuatec. by a downward movement of the car asit approaches a station from which a down signal has been sent and by anupward movement of the car as it ap proaches a station from which an upsignal has been sent, to complete the car signal lamp circuit.

30. In combination with an elevator car, a plurality of station doors, aplurality of station signal transmitters, circuits therefor, meansactuated by the movement of the car for changing said circuits wherebythe same movement of any or" the signal transmitters may be utilized forsending a down signal when the car is at the upper end of its run or ismoving downward toward said transmitter, or an up signal when the car isat the lower end of its travel or is moving upward toward saidtransmitter, and means actuated by the opening of a door at the stationtron which a signal has been sent for deenergizing whichever of saidcircuits has been utilized for sending a signal.

31. In combination with an elevator car, a plurality of station doors, asignal in the car, a circuit :tor said car signal, a plurality ofstation signal transmitters, circuits therefor, door switches in saidcircuits, means actuated by the movement of the car for changing saidcircuits whereby the same movement of any of the signal transmitters maybe utilized to control said signal circuit for a down signal when thecar is at the upper end of its run or is moving downward toward saidtransmitter, or an up signal when the car is at the lower end of itstravel or is moving n ward toward sai l transmitter, said door switchesbeing actuated by the opening of a door at the station from which asignal has been sent for breaking which ever transmitter circuit hasbeen utilized for sending a signal.

in an elevator signal system, a station door, a station signaltransmitter, a down sijnal transmission line, an up signal trans missionline, a selector associated with the transmitter for cl anging saidtransmission lines so that a. signal may be sent through either of saidlines by the some movement 01" the transmitter, and means actuated bythe opening of the door for breaking whichever signal transmission linehas been utilized for a signal.

33. In combination with an elevator car, astation door, an electricstation signal trans n'iitter, a down signal circuit, an up signalcircuit, selector relay associated with the transmitter for changingsaid circuits so that a signal. may be sent through. either of saidcircuits by the same movement of the transmitter, means actuated by themoven'ient of the car for controlling said selector relay, and a doorswitch in said signal circuits actuated by the movement of the door andarranged to break whichever signal circuit has been utilized for asignal.

34-. In combination with an elevator car, a station door, a si ":l inthe car, a station signal transmitter. a door switch, circuits betweensaid transmitter and the car signal through said door switch, n'ieansactuated. by the movement of the car in dili'erent directions forcausing the same movement of the transmitter to energize one of saidcircuits for one direction of car movement and to energize another ofsaid circuits for the opposite dircctiou of car movei'nont, and meansactuated by the movement of the car in the direction for which a carsignal circuit has been energized to complete said circuit, said doorswitch being arranged to be actuated by the opening oi the door forbreaking whichever transmitter circuit has been energized by thetransmitter.

ln combination. with an elevator car,

a plurality of station doors, signal in the car, a circuit for said carsignal, a switch For each door, a plurality of station signaltransmitters, circuits between said transmitters and the car throughsaid door switches, and means actuated or 1 for changing said circuitswhereby the same movement of any of the signal transmittens may beutilized to control said car signal circuit for a down or an up signal,

mean actuated by a downward movement of the car as it approaches astation from which a down signal has been sent or by an upward movementof the car it approa ches a station from which an up signal been sent tocomplete the car signal cirthe movement of the cuit, said door switchesbeing arranged to be actuated by the opening of a door at the stationfrom which a signal has been sent for breaking whichever circuit hasbeen utilized by a transmitter for controlling the car signal circuit.

36. In combination with an elevator car, a station door, down signalcircuit, a holding magnet therein, an up signal circuit, a holdingmagnet therein, a station signal transmitter comprising a single pushbutton and arranged to energize either one or the other of saidcircuits, and means actuated by the opening of the door fordee'nergizing the holding magnet in whichever circuit has been energizedby the transmitter 37. In combination with an elevator car, a stationdoor, a down signal transmission line, a holding magnet therein, an upsignal transmission line, a holding magnet therein, a direction switcharranged to be actuated by the movement of the car and arranged toconnect one or the other of said transmission lines with a supply ofenergy, a station signal transmitter comprising a single push button andarranged to complete a circuit through whichever of said transmissionlines is connected with the supply of energy, and means actuated by theopening of the door for dee'nergizing whichever holding magnet has beencompleted by the transmitter.

38. In combination with an elevator car, a station door, a down signalwire, a holding magnet therein, an up signal wire, a holding magnettherein. a door switch in said wires, a direction switch arranged to beactuated by the movement of the car and arranged to connect one or theother 01? said signal wires with a source of electrical energy, and apush button arranged to complete a circuit through whichever of saidsignal wires is connected with the source of electrical energy, saiddoor switch being arranged to be actuated by the opening of the door todeenergize the holding magnet in whichever of said circuits has beencompleted by the push button to break said circuit.

39. In combination with an elevmor car, a station door, a signal in thecar, a circuit for said car signal, a down signal wire, a holding magnettherein, an up signal wire, .1 holding magnet therein, a door switch insaid signal wires, a direction switch arranged to be actuated by themovementof the car and arranged to connectone or the other of saidsignal wires with a source of electrical energy, and a station signaltransmitter comprising a single push button arranged to energize acircuit through which over of said signal wires is connected with thesource of electrical energy and to control said car signal circuit, saiddoor switch being actuated by the opening of the door to deenergize theholding magnet in whichever signal circuit has been energized by thepush button.

40. In combination with an elevator car, a station door, a down signalcircuit, a hold ing magnet therein, an indicating lamp for said downsignal circuit, an up signal circuit, a holding magnet therein, anindicating lamp for said up signal circuit, a direction. switch arrangedto be actuated by the movement ot the car and arranged to connect one orthe other oil? the signal circuits with a source of electrical supplyand to close a circuit through one or the other o't said indicatinglamps, a station signal transmitter con'iprising a single push buttonand arranged to complete a circuit through whichever of said signalcircuits is connected with the source of electrical supply, and meansactuated by the opening of the door for deenergizing the holding magnetin whichever signal circuit has been con'ipleted by the transmitter tobreak said circuit.

ii. In an elevator signal system, a station door, a down signaltrmismission line, a holding magnet therein, an up signal trans missionline, a holding magnet therein, a station signal transmitter, comprisinga push button and a selector tor changing said transmission lines sothat a signal may be sent through either of said lines by the samemiiwcmcut ot' the transmitter, and means actuated by the opening oi. thedoor for docuergiziug the holding magnet in whichever signaltransmission line has been untilized to! a ml to break said line.

In combination with an elevator car,

a station door, a signal in the car, a station signal transmitter, adoor switch, a pair oi? holding magnets, circui between s .d transmitterand the car signal through said door switch. and holding naguets, meansactuated by the movement of the car in diii' erent directions for causthe same movement of the transmitter to energize a circuit for onedirection of car movement and to energize another circuit for theopposite direction of car movement, and means actu fl by the movement ofthe car in the direction for which a car signal circuit has beenenergized to complete said circuit, said door snitch being arranged tobe actuated by the opening of the d or for deenei-gizing whicheverholding magnet has been energiz-ccd by the transmitter to break itscircuit. combination with an elevator car, a it ot station doors, aplurality of i ,ul transmitters, circuits therefor, holding i'nagnets insaid circuits, means actuated by the movement the car for changing saidcircuits whereby the same movement of the signal transmitters may beutilized for sending a down signal when the car is at the upper end ofits run or is moving downward toward said transmitter. or

Y static? s gn ill) up signal when the car is at the lower end of itstravel or is moving upward. toward said transmitter, and means actuatedby the opening of a door at the station from which a. signal has beensent for decnergiw ing the holding magnet in whichever of said circuitshas been utilized for sending a sig nal to break said circuit.

ll. in combination with an elevator car, a plurality of station doors, asignal in the car, a circuit for said car signal, a switch for eachdoor, a plurality of station signal transmittors, a pair of holdingmagnets for each station, circuits between said transmitters throughsaid door switches and holding magnets, and means ictuated by the movement of the car tor changing said circuits whereby the same moven'ientof any of the signal t ansmitters may oe utilized to con trol said carsignal circuit for a down or an up signal, n'ieans actuated by adownward movement of the car as itapproaches lion. from, which a downsignal has been sent or by an upward movement of the car as itapproaches station from which an up signal has been sent to oomph-litethe car signal circuit, said door switches being arranged to be actuatedby the opening of a door at the station from which a signal has beensent for deenergizing the holding magnetin whichever circuit has beenutilized by a transnitt r for controlling the car signal circuit tobreak said circuit.

In combination with an elevator car, a station indicator signal, astation. signal transmitter, circuits therefor, means actuated by thecar reaching the ends oil its travel and by the movement of the car inditi'erent directions for causing the same movement of thetransmiliteiito control a circuit for a downward movement of the car andto control another circuit tor an upward movement of the car, and othermeans actuated by the movement of the car for actuating the station sirial after said transmitter has been actuated.

4:6. in combination with an elevator car, a down. station indicatorsignal, an up station indicator signal, a station signal transmitter,circuits therefor, means actuated by the movementof the car for changingsaid circuits whereby the same movei'nent ot the signal transmitter maybe utilized for sending down signal when the car is at the upper end ofits run or is moving downward, or an up signal when the car is the lowerend of its run or is moving in, ward. and other means actuated by thedownwarc .inovement o1 the car for actuating the down station indicatorsignal after the transmitter has sent a down signal or by the upwardmovement or" the car for actuating the up station indicator signal afterthe transmitter has sent an up signal.

In. combination with an elevator car,

a staa plurality of station indicator lamps at a station, a statlonsignal trai'ismitter compi ng a single push button, circuits there for,means actuated by the moven'ient oi: the

car in. dil'lercnt directions for causing the same movement of the pushbutton to con trol. a circuit for a downward moment of the car and tocontrol another circuit for an upward movement of the car, and othermeans actuated by the movement oil the car as it approaches the stationfor siuxaissivcly illuminating the station indicator lamps at a stationafter the push button at that station has been actuated.

l8. in combination. with an elevator car, a plurality of. down stationindicator lamps at a s ation, a plurality of up station indicater lampsat a station, a station signal transmitter compr sing a single pushbutton, circuits ticreitor, means actuated by the movement of the carfor changing said circuits whereby the same moven'int oi": the

push button may be utilized for sending either a down signal or an upsignal, and other means actuated by the downward movement ol the car at.it approaches the station. for successively illuminating the downindicator lamps at a station after the push button at that station hassent a down signal, or by the upward movement of the car as itapproaches the station for successively illuminating the up indicatorlamps at the same station.

In combination with an elevator car, a ion indicator signal, a stationsignal transmitter arranged to send down and up signals when a ituated,means at said transmitter to show which of said signals it will send,and other means actuated by the movement of the car for actuating thestation in dicator signal after said transmitter has been actuated.

50. In combination with an elevator car, adown station indicator lamp,an up station. indicator lamp, a station signal transmitter, pair oflamps at said transmitter, means actuated by the movement of the car forilluminating one of said pair of lamps when the transmitter is incondition to send a down signal and for illuminating the other of saidpa of lamps when the transmitter is in con dition to send an up signal,and other means actuated by the movement of the car from above torilluminating the down station indicator lamp after a down signal hasbeen sent and by the movement of the car from below for illuminating theup station indicator lamp after an up signal has been sent.

51. In combination with an elevator car, a, plurality of down stationindicator lamps, a plurality of up station indicator lamps, a stationpush button arranged to send down and. up signals when actuated, a pairof lamps within said push button, means actuail-ed by the movement ofthe car in dillerent directions for illuminating one of said push buttonlamps when the push button is in condition to send a down signal and forilluminating the other push button lamp when the push button is incondition to send an up signal, and other means actuated by the movementof the car as it approaches the station from above for successivelyilluminating the down station indicat r lamps and as it approaches thestation from below for successively illuminating the up stationindicator lamps.

52. In an elevator signal system, a push button and associated meansarranged to send down and up signal when actuated, a, casing for saidpush button, a pair oi lamps within said casing, means for illuminatingone of said pair of lamps when the push button is in condition to send adown signal and for illuminating the other of said pair of lamps whenthe push button is in condition to send an up signal, a plurality ofdown station indicator lamps, a plurality or" up station indicatorlamps, and means for successively illuminating the down stationindicator lamps after the push button has been actuated to send a downsignal and the up station indicator lamps after the push button has beenactuated to send an up signal.

53. In an elevator system, a casing com prising a centrally disposedpush button having a transparent face, means associated with said pushbutton whereby said button is arranged to send down and up signals whenactuated, a pair of lamps of ditli'erent appearance within said pushbutton, means for illuminating one of said lamps when the push button isin condition to send a down signal and for illuminating the other ofsaid lamps when the push button is in condition to send. an up signal, aplurality of down station indicator lamps above said push button, aplurality of up station indicator lamps below the push button, and meansfor successively illuminating the down station indicator lamps alter adown signal has been sent by the push button and for successivelyilluminating the up station indicator lamps after an up signal has beensent by the pusl'i button.

54,-. In combination with an elevator car, a signal therein, a .tationsignal transmitter, circuits between said transmitter and the carsignal, means actuated by movements of the car in different directionsfor causing the same movei'nent ot' the transmitter to energize acircuit for one direction of car movement, and to energize anothercircuit for the opposite direction oi car movement, a station indicatorsignal, and means actuated by the movement 01'. the car in the directionfor wnich car signal circuit has been energized, to complete saidcircuit, and to actuate the station indicator signal.

in combination with an elevator car,

a signal therein, a station signal transmitter, circuits between saidtransmitter and the car signal, means actuated by the movements of thecar for changing said cir cuits whereby the same movement of the signaltransmitter may be utilized for energizing a circuit for a down signalwhen the car is at the upper end of its run or is moving downward towardsaid transmitter or another circuit for an up signal when the car is atthe lower end of its travel or is moving upward toward the transmitter,a down station indicator signal, an up station indicator, and meansactuated by the movement of the car in the direction for which carsignal circuit has been energized, to complete said circuit and toactuate one of said station indicator signals.

56. In combination with an elevator car, a signal therein, a station sinal transmitter, circuits between said transmitter and the car signal,means actuated by movements of the car in different directions forcausing the same movement of the transmitter to energize a circuit forone direction of car movement, and to energize another circuit for theopposite direction of car movement, a set of down station indicatorlamps, a set of up station signal lamps, and means actuated by themovement of the car in the direction for which a car signal circuit hasbeen energized, to complete said circuit and to successively illuminateone of indicator lamps.

57. In combination with an elevator car, a station. door, a signal. inthe car, station signal transn'iitter, door switch, circuits betweensaid transmitter and the car signal through said door switch, meansactuated by the movement of the car in different directions for causingthe same movement of the transmitter to energize a circuit for onedirection or car movement and to energize another circuit for theopposite direction oi? car movement, a. station indicator signal andmeans actuated by the movement of the car in the direction for which acar signal circuit ha been energized to complete said circuit and toenergi e the station indicator signal, said door switch being arrangedto be actuated. by the opening of the door for breaking whichevertransmitter circuit has been energized by the transmitter.

58. In combination with an elevator car, a station door, a signal in thecar, a station signal transmitter, a door switch, a pair of holdingmagnets, circuits between said transmitter and the car signal. throughsaid door switch and holding magnets,-means actuated by the movement ofthe car in different directions for causing the same movement of thetransmitter to energize acircuit tor one direction of car movement andto energize another circuit tor the opposite direction of car movement,a down station indicator signal, an up station indicator signal, andmeans actuated by the movement oi the car in. the direction for which acar signal circuit has been energized to complete said circuit a id toactuate the corresponding station indicator si nal, said door switch.being arran ed to be actuated by the opening of the door fordeenergizing whichever holding n'iagnet has been energized by thetransn'iitter to break its cir cuit.

59. In combination with. an elevator car, a station door, a signal inthe car, a station signal. transmitter, a door switch, a pair of holdingmagnets, circuits between said transmitter and the car signal throughsaid door switch and holding magnets, means actuated by the movement ofthe car in different directions for causing the same movement or thetransmitter to energize a circuit for one direction of car movement andto energize another circuit for the opposite direction oi? car movement,a set oi down station indicator lamps, a set of up station indicatorlamps, and means actuated by the movement of the car in the directionfor which a car signal circuit has been onergized to complete saidcircuit and o successively illuminate the indicator lamps of thecorresponding set, said door switch being arranged to be actuated by theopening of the door for deenergizing whichever holding magnethas beenenergized. by the transmitter to break its circuit.

60. In combination with an elevator car, a down signal circuit, aholding magnet therefor, a down interlcck relay in said circuit, an upsignal circuit, a holding magnet therefor, an up interlock relay in saidcircuit, station signal transmitter comprising a single push button andarranged to momentarily energize either of said circuits and saidinterlock relays being arranged to maintain the GZlClQIlI Zillil-OU ofwhichever circuit is en 'ized by the g transmitter.

61. In combination with an elevator car, a station door, a down signalcircuit, a hold ing magnet therefor, a down interlock relay in saidcircuit, an up signal circuit, a holding magnet theretor, an upinterlock relay in said circuit, a station signal transmitter comprisinga single push button and arranged to momentarily energize either oi'said circuits and said interlock relays being arranged to maintain theenergization of whichever circuit is energized by the transmitter, andmeans actuated by the opening of the door for deli ergizing theinterlock relay and the holding magnet in whichever circuit has beenenergized by the transmitter.

G2.- lu combination with an elevator car, a station door, a signal inthe car, a circuit for said. car signal, a down si nal wire, a

holding relay in magnet therefor, an up interlock said circuit, an upsignal wire, a, holding magnet therefor, an up interlock relay in saidcircuit, a door switch in said signal wires, a direction switch arrangedto be actuated by the movement of the car and arranged to connect one orthe other of :aid signal wires with a source ol electrical energy, and astation signal trans mitter comprising a single push button arranged toenergize circuit through whichever of said signal wires is connectedwith the source or electrical energy and through its interlock relay toenergize one of said holding magnets and to control. the car Sig oalcircuit, said door switch being actuated by the opening of a door todeenergize the interlock relay to cause it to break the circuit, througha holding magnet in whichever signal circuit has been energized by thepush button.

63. In combination with an elevator car, a station door, a signal in thecar, a station. signal transn'iitter, a door switch, a pair 0t holdingmagnets, a pair of interlock relays, circuits between said transn'iitterand the car signal through said interlock relays, means actuated by themovement of the car in different directions for causing the samemovement of the transmitter to energize circuit for one direction of carmovement and to energize another circuit for the opposite direction ofour movement, and means actuated by th movement of the car in thedirection for which a car signal circuit has been energized to completesaid circuit, said. door switch being arranged to be actuated by theopening of the door for deeuergizing whichever interlock relay andholding mag-- net has been energized by the transmitter to break theircircuits.

(it. In combination with a phrality oi? elevator cars, a station signaltransmitter comprising a signal push button tor each tar, circuits forsaid transmitters, means acti'lated by the movements of said cars for chthe circuits for their respective transmitters where 'iy any push buttonmay be utilized when its car moving downward for sending a down signalto all of the cars moving toward the transn'iit-ter from above or whenits car is mming upward for sending an up signal to all of the carsmoving toward said transmittc" from below.

In combination .vith a plurality of elevator cars, a station signaltransmitter comprising a signal push button for each car, circuits forsaid transmitters, means actuated by the movements of said cars forchanging the circuits for their respectiwt ansmitters whereby any pushbutton may be utilized when its car is moving downward for sending adown signal to all of the cars which are at the upper end of their runsor are moving toward said transmitter from above, or may be utilizedwhen its car is moving upward for sending an up signal to all of thecars which are at the lower ends of their runs or are moving toward saidtransmitter from below.

66. In combination with a plurality of elevator cars, a station signaltransmitter for each car, circuits for said transmitters, means actuatedby the movements of said cars for changing the circuits for theirrespective transmitters whereby any transmitter be utilized when its caris moving downward for sending a down signal to all of the cars movingtoward the transmitter from above or when its car is moving upward forsending an up signal to all of the cars moving toward said transmitterfrom below and means at each transmitter to indicate which of saidsignals it will send.

67. In combination with a plurality of elevator cars, a plurality ofstation signal transmitters for each car, :ircuits for saidtransmitters, means actuated. by the move mento't said cars for changingthe circuits for their respective transmitters whereby any transmittermay be utilized. when its car is moving downward for sending a downsignal to all of the cars moving toward the transmitter from above orwhen its car is moving upward and for sending an up sig nal to all ofthe cars moving toward said transmitter from below and means at eachtransmitter to indicate which of. said signals it will send.

68. In combination with a plurality of elevator cars, a signal. in eachcar, a sta tion signal transmitter con'iprising a single push button foreach car, circuits between said transmitters and the car signals, meansactuated by the movements of the cars in different directions for sochanging laid circuits that any push button may be utilized when its caris a down car for energizing a circuit for a down signal and meansactuated by any car approaching the station from above after saidcircuit has been energized for closing said energized circuit to.

actuate its respective car signal; and that any push button may beutilized when its car is an up car for energizing a circuit 5 an upsignal and means actuated by any car approaching the station n belowafter said circuit has been ener d for clo ing a circuit to actuate itsrespe 69. In combination with a plurality elevator cars, a signal ineach car, a. circuit for each car signal, a pluralitv of station signaltransmitters each comprising a single push button for each car, circuitstheretl oin means actuated by the movement or the car for changing saidcircuits, whereby the same movement of any of the push buttons may beutilized to control said car signal circuits for a down signal, for thecars r in which are at the upper ends f their runs or are movingdownward ti ,vard said push button or an up signal for such cars as areat the lower ends of their runs or are moving upward toward said pushbutton and. means actuated by a downward movement Olii any car as itapproaches a station from which a down signal has been sent and by anupward movement of any car as it approaches astation from which an upsignal has been sent to complete its respective car signal circuit.

70. In combination with a plurality of elevator cars a station door foreach car, a down signal circuit, an up signal circuit a station signaltransmitter comprising a single push button. for each car, and arrangedto energize said circuits for all of the cars and means actuated by theopening 01 any one of the doors for deenergizing whichever circuit hasbeen energized by a push button.

71'. In combination with a plurility of elevator cars, a station door"for each car a door switch for each door, a down signal circuit runningin series through the door switches at said station, an up signalcircuit running in series through the door switches at said station anda station signal transmitter comprising a single push button for e chcar, means actuated by the movements of the cars, for so changing saidcircuits that any transmitter may send a signal through a down signalcircuit or through an up signal circuit and means in said door switchesfor causing the opening of door to break whichever signal circuit asignal has been sent through.

72. In combinaation with plurality of elevator cars, a station door foreach car, a down signal circuit, an up signal circuit, a station signaltransmitter for each car, each transmitter comprising a single pushbutton. a holding magnet for the down sig il circuit and another holdingmagnet for the up signal circuit and being arranged to energize eitheroi? said circuits and means actuated by the opening of a door fordeenergizing the holding magnet in whichever circuit has been energizedby the tn .sniitter.

73. In combination with a plurality of elevator cars a station. transmifor each or car, each transmitter comprising a single push button, adown holding ina 'nct, and an up holding magnet, circuits for saidholding magnets, a down signal circuit, an up signal circuit, meansactuated. by the move ments of the cars for putting said transmih tersin condition to send a signal through the down signal circuit or throughhe up signal circuih a down interlock relay and an up interlock relay ateach station, and means actuated. by any transmitter in. con d1 tion tosend a down signal for momentaril; closing a circuit through its downholding magnet and for the down interlock relay,

ell)

said down interlock relay being arranged to maintain said. circuit andbeing provided with means for closing and maintaining the circuitsthrough the down holding magnet of all other transmitters at its stationwhich are in condition to send a down signal.

T l. In combination. with a plurality or elevator cars, a stationtransmitter for each car, signal circuits therefor, each transmit tercomprising a single push button being arranged to n'iomentarily close acircuit for a down signal or for an up signal, a down interlock relay inthe down signal circuit, and an up signal interlock relay in the upsignal circuit, said relays being provided. with means arranged tomaintain the circuit momentarily closed through it by a transmitter.

75. In combination with a plurality of elevator cars, a door for eachcar at each station, a station transmitter for each car, signal circuitstherefor, each transmitter comprising a single push button. and beingarranged to momentarily close a circuit for a down signal or for an upsignal through one or the other of said signal circuits, a downinterlock relay in the down signal circuit, and an up interlock relay inthe up signal circuit, said relays being pr vided with means arranged tomaintain the circuit momentarily closed through them by a transmitter;and means actuated by the opening of any of said doors for releasingwhich ever of said interlock relays is maintaining a circuit to breaksaid circuit.

76. in combination with a plurality of elevator cars, a station. doorfor each car, a down signal circuit, an up signal circuit, a stationtransmitter for each car, each transmitter comprising a single pushbutton, a holding magnet for the down signal circuit and another holdingmagnet for the up nal circuit and being arranged to energize either ofsaid circuits, an interlock relay for each signal circuit, and meansactuated by the opening of the door for decnergizing the interlock relayin whichever circuit has been energized by the transmitter to therebydeenergize all holding magnets which have been actuated by thetransmitters for sending a like signal.

77. In combination with a plurality of elevator cars, a station door foreach car, a signal in each car, circuits for said car signals,

.- a down signal wire, an up signal wire, a

door switch for each door, said signal wires passing in series throughsaid door switch. an interlock relay in each of said signal wires, adirection switch for each car arranged to be actuated by the movement ofits car, and arranged to connect one or the other of said signal wiresfor each car with a source of electrical energy and a push button foreach at arranged. to energize a circuit from whichever of said signalwires is connected.

headset with the source of electrical energy and to control said carsignal circuits, the door switch being arranged to be actuated by theopening of the door to deenergize the inter lock relay in whicheversignal circuit has been. energized by the push button and to de energizeall holding magnets which have been energized by the push buttons for asimilar signal.

78. In combination with a plurality of elevator cars, a station door foreach car, a door switch for each door, a signal in each car, astationsignal transmitter for each. car, each transmitter comprising a pair ofholding magnets, a pair oi? interlock relays and circuits between eachtransmitter and the car signals through said holding magnets, interlockrelays and door switches, means actuated by the movements of the car indiil'erent directions for causing the s: me movement of the respectivetransmitters to energize a circuit for one direction oi car movement andto energize another circuit for the opposite direction of car movement,and means actuated by the movement of the car in the direction for whicha car signal circuit has been energized to complete said circuit for itssignal, said door switches being arranged to be actuated by the openingof a door to de'energize whichever interlock relay has been energized bythe transmitter to break its circuit and the circuits of all the holdingmagnets which have been energized by the transmitters for a similarsignal.

79. In combination with a plurality oi elevator cars, a plurality ofstation doors for each elevator car, a door switch for each door, aplurality of station signal trans1nitters for each car, each of saidtransmitters comprisin a pair of holding magnets, circuits for saidtransmitters, means actuated by the movement of each car for changingthe circuits oi? its transmitters whereby the same movement of thesignal transmitters may be utilized when their car is moving downwardfor sending a down signal to all of the cars which are moving downwardtoward said transmitter, or may be utilized when their car is movingupward for sending an up signal to all of the cars which are movingupward. toward said transmitter, a pair of interlock relays at eachstation, and means actuated by the opening of a door at the station fromwhich a. signal has been sent for deenergizing the interlock relay atsaid station in whichever ct said circuits has been utilized for sendingthe signal to br ak said circuit and to dciinergize each holding magnetat said station which has been ener gized for sending a similar signal.

80. In combiiuttion with a plurality of ele- 'vator cars, plurality ofstation doors for each car, a door switch for each door, a push buttonat each station for each car, each push button comprising a down holdingmagnet .llO

